Umm, nothing serious from memory. Although apparently I might have a very mild form of spinda bifida oculta. I found this out when I got some X rays done when I went to a chiropractor once. Basically they reckon that right at the very top of my spine, just before it hits the skull, the bone doesn’t form all the way around and there is instead a big mass of soft tissue there instead. Nothing serious and wouldn’t have know unless they had done the scan. They reckon I shouldn’t play rugby just in case I got hit in that part of the neck as it might cause more damage than a normal person.